CTA Manufacturing Extra Deep Socket - 20 mm.
CTA Manufacturing Extra-Deep Metric Socket - 8 mm
CTA Manufacturing Extra Deep Metric Socket - 13 mm
CTA Manufacturing Crank Bolt Socket - 21 mm
CTA Manufacturing Crank Bolt Socket 24 mm
13mm Extra Deep Socket CTA Manufacturing 1713
CTA Tools 1030 10mm and 12mm Extra Deep Socket Set